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127
Yan Chun
Oncology
About me
Graduated from the Clinical Medicine Department of Qingdao Medical College, has been working in the Oncology Department since 2001, obtained the qualification of attending physician in the same year. Promoted to attending physician in 2003. Qualified as associate chief physician in 2011. Participated in advanced studies at Jinan Cancer Hospital from June to November 2015. Serves as a youth member of the Chemical Therapy Committee in Shandong Province, youth member of the Elderly Therapy Committee of the Qingdao Anti-cancer Association, and a member of the Biologic Therapy Committee of the Qingdao Anti-cancer Association.
Proficient in diseases
Chemotherapy, radiotherapy, deep hyperthermia, targeted therapy, and endocrine therapy for various tumors such as stomach cancer, colorectal cancer, lung cancer, breast cancer, ovarian cancer, and pancreatic cancer.
Voices
Does early-stage liver cancer cause itchy skin?
Liver cancer is one of the common malignant tumors in the digestive system. In the early stages of liver cancer, most patients do not exhibit symptoms of skin itching. It is only when the cancer progresses and causes obstructive jaundice that patients clinically develop symptoms of skin itching. Early-stage liver cancer patients typically do not show typical clinical symptoms, or they may not have any significant symptoms at all. This is because early-stage liver cancer lesions are small and localized, without external invasion or metastasis. Therefore, the impact on the entire body is minimal, and clinically it generally manifests as mild abdominal bloating, discomfort, nausea, diarrhea, and some patients may experience a dull ache or discomfort in the liver area. Because the symptoms of early-stage liver cancer are atypical, many patients are already in the middle to late stages by the time they seek medical attention, missing the opportunity for clinical cure.
What are some symptoms of early pancreatic cancer?
Patients with early-stage pancreatic cancer generally do not exhibit many symptoms, as the tumors are relatively small. Clinically, many patients may experience intermittent mild abdominal pain that does not affect their daily lives. A small number of early-stage patients may exhibit symptoms of general fatigue, mild loss of appetite, nausea, mild acid reflux, or other symptoms of indigestion. Additionally, a few patients in the early stages may experience intermittent episodes of diarrhea. Because these symptoms are not distinctive, patients rarely seek medical attention early. When symptoms like significant epigastric pain and jaundice become apparent, it often indicates that the pancreatic cancer has progressed to a more advanced stage.
What are the symptoms of subungual melanoma?
Subungual melanoma, clinically, displays different symptoms depending on the stage. In its early stages, subungual melanoma primarily manifests as changes in nail color, with some cases showing localized thickening of the nail. As the melanoma progresses, abnormal secretions such as bloody or serous fluids may appear under the nail, and the nail itself may become uneven. As the subungual melanoma invades surrounding tissues, symptoms such as swelling, pain, or bleeding in the localized fingernail may occur. In advanced stages, symptoms of metastatic sites, such as coughing, chest pain, and chest tightness from lung metastases, can also manifest.
How to detect colorectal cancer early
In clinical practice, to detect colorectal cancer early, screening should be prioritized for individuals with a family history of colorectal cancer. This generally involves tests for tumor markers and colonoscopy examinations. The tumor markers include carcinoembryonic antigen, carbohydrate antigen 724, carbohydrate antigen 199, and carbohydrate antigen 125, among others. Colonoscopy examinations should be conducted annually. Furthermore, for individuals with colorectal polyps, yearly colonoscopy is especially recommended to detect early stages of colon cancer. Similarly, for individuals suffering from chronic inflammatory diseases of the colon and rectum such as ulcerative colitis or Crohn's disease, colonoscopy examinations should also be performed to facilitate early detection of colorectal cancer.
Can someone with thyroid cancer occasionally eat barbecue?
Patients with thyroid cancer can occasionally eat barbecue, but should limit their intake of such foods. This is because thyroid cancer is a common malignant tumor in the head and neck area, and its exact cause is still unclear. The mechanism of its development is also not clearly understood. However, the high incidence of thyroid cancer is related to certain factors such as radiation, viral infections, or genetic factors, and both iodine deficiency and excess can lead to a high incidence of thyroid cancer. Barbecued foods are not beneficial for the recovery from thyroid cancer, therefore it is clinically advised to reduce intake. However, eating it occasionally does not have a significant impact on the overall health of patients, so it can be consumed in moderation. Additionally, for patients with thyroid cancer, the diet should mainly be easy to digest, non-irritating, and should enhance bodily immune strength.
What are the signs of pancreatic cancer?
Pancreatic cancer is a type of malignant tumor of the digestive tract that is difficult to detect in its early stages. The signs of pancreatic cancer mainly include the following: First, among people with diabetes, if there is a sudden occurrence of uncontrollable blood sugar levels, unexplained general fatigue, abdominal pain, decreased appetite, or even jaundice, one should highly suspect the possibility of pancreatic cancer. Second, individuals with a family history of cancer who recently experience unexplained symptoms related to the digestive tract should also be alert to the possibility of pancreatic cancer. Third, some patients may experience unexplained rapid weight loss accompanied by significant jaundice, which should also be considered as potentially indicating pancreatic cancer.
Does CEA increase in throat cancer?
In the blood tests of some laryngeal cancer patients, an increase in the CEA index may be observed, but most laryngeal cancer patients do not exhibit abnormal CEA levels. This is because laryngeal cancer is a common malignant tumor in the head and neck region, and currently, there are no specific tumor markers clinically for laryngeal cancer. CEA, also known as carcinoembryonic antigen, is a tumor marker that is most often elevated in the bodies of patients with malignant tumors. Clinically, an increase in the CEA level is commonly seen in malignant tumors of the gastrointestinal tract, thoracic malignancies, malignancies in the female urogenital system, and some tumors in the male urogenital system. However, in patients with head and neck malignancies, this marker is not commonly elevated.
What are the early symptoms of kidney cancer?
Kidney cancer is a common malignant tumor in the urinary system. Many patients with early-stage kidney cancer do not show any symptoms clinically and are incidentally discovered during medical examinations. Many patients in the early stages may also present with painless hematuria, sometimes as gross hematuria and sometimes as microscopic hematuria. Some patients may experience pain in the kidney area due to blood clots formed after hematuria, mainly presenting as intermittent episodes of mild back pain. Additionally, some patients in the early stages might show symptoms of paraneoplastic syndrome, such as hypertension and fever, but these clinical symptoms generally occur at a very low frequency. When patients present with obvious clinical symptoms, it often indicates that the kidney cancer has metastasized, leading to a clinical presentation of mid-to-late stage kidney cancer.
What should be noted about having intercourse after ovarian cancer surgery?
Patients with ovarian cancer can have sexual intercourse after radical surgery or palliative surgery, but there are several precautions to consider: Firstly, it is not advisable to have sexual intercourse too soon after surgery, as early intercourse may lead to poor healing of the surgical site, or cause infections, which are detrimental to the patient's recovery. It is generally recommended to schedule sexual intercourse one or two months after ovarian cancer surgery, and some patients are advised to wait three months. After three months, most patients' physical conditions improve and the incisions heal. In such cases, the likelihood of infection from intercourse is low. Moreover, the frequency of sexual intercourse should not be too frequent or excessive, as it may impact the patient's physical strength or lead to concurrent infections. Furthermore, patients should practice contraception during intercourse after surgery, as pregnancy is not advisable for patients who have undergone radical or palliative surgery for ovarian cancer, since pregnancy can exacerbate the development of the disease.
Is intermittent pain in the upper right abdomen for two months colon cancer?
Persistent dull pain in the upper right abdomen lasting two months is very likely a clinical symptom caused by colon cancer. This is often due to the lesion of colon cancer invading the intestinal mucosa, causing mucosal spasms and resulting in pain. Alternatively, the tumor may cause obstruction of the intestinal lumen, leading to intestinal obstruction, which also presents as pain clinically. This type of pain is generally characterized by persistent dull pain, especially more pronounced at night, and ordinary anti-inflammatory and analgesic drugs are less effective in relieving it. The pain will only subside after the lesions of colon cancer are effectively controlled. However, for dull pain in the upper right abdomen, some benign diseases, such as certain ulcerative colitis or chronic intestinal tuberculosis, should also be considered, as they can present with similar symptoms. To definitively diagnose whether the dull pain is caused by colon cancer or a benign colon condition, it is generally necessary to complete related imaging or hematological examinations. Sometimes, histopathological examinations are necessary to differentiate the diagnosis.